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Hello,</div>
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I'm trying to find any existing documentation or test results of latency differences between using Opus and uncompressed audio UDP streams such as Jacktrip. I have posted my question to the Jacktrip users group here: </div>
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<a href="https://groups.google.com/g/jacktrip-users/c/xxMlqah1SKw" id="LPlnk396328">https://groups.google.com/g/jacktrip-users/c/xxMlqah1SKw</a><br>
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As well as to my general telephony network on LinkedIn here:</div>
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<span style="color: rgba(0, 0, 0, 0.9); font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Fira Sans", Ubuntu, Oxygen, "Oxygen Sans", Cantarell, "Droid Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Lucida Grande", Helvetica, Arial, sans-serif; background-color: rgb(243, 242, 239); display: inline !important;"><a href="https://www.linkedin.com/posts/mattkeys_jacktrip-udp-vs-sip-rtp-activity-6809305949031931904-IuGQ" id="LPlnk">https://www.linkedin.com/posts/mattkeys_jacktrip-udp-vs-sip-rtp-activity-6809305949031931904-IuGQ</a></span><br>
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The underlying question being -- which (opus stereo at 48k or uncompressed UDP) is best for lowest latency and highest quality audio while assuming the endpoints are physically distant? As far as I can tell Jacktrip recommends max distance of 250 miles or less
between clients, and "Research suggests it's very difficult to perform music with a delay greater than 25 milliseconds". </div>
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I welcome suggestions on how to benchmark this latency difference, if any. I was thinking about using jack_iodelay and a loopback between audio in and audio outputs while using baresip + jack + opus.</div>
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Thanks,</div>
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Matt</div>
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